Combination drop and jack for telephone-switchboards.



N0. 699,6!9. Patented May 6, I902.

H. M. FISK. COMBINATION DROP AND JACK FOR TELEPHONE SWITGHBOARDS.

(Apnlication filed June 22, 1900.)

(N0 Model.)

Nrrnp STATES Fn'rnnr @rrrcn.

HENRY M. FISK, OF VZIIEATON, ILLINOIS.

COMBINATION DROP AND JACK FOR TELEPHONE-SWIICH BOARDS.

SPECIFICATION forming part of Letters Patent No. 699,619, dated May 6, 1902. Application filed June 22,1900. $erial No. 21,285. (No model.)

' zen of the United States,residing at Wheaton,

in the county of Du Page and State of Illinois,have invented certain new and useful Improvements in a Combined Drop and Jack for Telephone-Switchboards,of which the following is a full, clear, concise, and exact description.

Myinvention consists of, first, an improved and novel combination of parts for the resto ration mechanically of the indicators of telephone-lines by the act of inserting the plugs in the line-jacks, and, secondly, in certain new configurations and the organization of the parts of said indicators, whereby the cost of manufacture is reduced and they are rendered more substantial than heretofore.

In the accompanying drawings, Figure 1 represents diagrammatically the principle of my restoring device. Fig. 2 shows a moditied form of the same. Fig. 3 shows additionalmodifications. Fig. etshows asectional view of the complete drop and jack and my particular construction of the same. Fig. 5 represents a front View of the devices shown in Fig. 4. Fig. 6 represents a back view of the same. Fig.7 illustrates the restoring-link in detail. Fig. 8 is a sectional view and shows the night-bell contacts. Fig. 9 is a top view of the device, and Fig. 10 shows the electrical circuit of the coil and springs.

Like letters refer to like parts in all figures.

Referring to Fig. 1, a represents a'shu'tter of a telephone-indicator pivoted at a 1) is a detent pivoted at li and adapted to engage with shutter a and retain it in its normal position. O is a switchboard-plug adapted to be inserted in the socket D. A suitable slide E is adapted to move back and forth horizontally. One end a of the said slide E is so formed as to engage with tip 0 of the plug 0, whereby it is caused to travel in a horizontal direction with the plug when the same is insorted in the socket D. The other end e of the said slide E is so formed up that it engages with the shutter a and causes it to rise to the vertical position and engage with the detent b when the said slide E is caused to move in the proper horizontal direction by the insertion of the plug 0. The modification of this slide shown in Fig. 2 consists The modification shown in 'Fig. 3 takes advantage of the forms in Figs. 1 and 2 and also utilizes the handles of the plug to further increase the movement upward of the end a Plug O has its handle beveled at c to an angle of approximately forty-five degrees. The bearing a serves to steady the slide, that the end 6 will remain engaged with the tip of plug throughout its travel. The bond 6 and bearing 6 serve the same purpose as explained in Fig. 2.

Fig. at shows indetail the means by which I adapt my restoring device for usein telephone-switchboards. The core :0 is inclosed in the winding y and is rigidly fastened to the end 10 of piece W, which is of iron and serves as both a frame upon which all other parts are mounted and as the return-piece of the magnet-core a1. 7 Piece in is turned up at 10 and has the extensions 10 and 10 formed upon it, from which is suspended the arma ture V.

As indicated in Fig. 6, the end 10 is cut away in such a manner that the end of core X is clear of it at all points, and the magnetic path of the least resistance from the core X to the piece 10 is through the armature V,

which is thus controlled by the winding Y when said coil is energized.

The piece W, as is shown in Fig. 9 at 10 10 extends out beyond the body of. the device to form two extensions, which fit. into grooves g g g gin the frame of the switchboardcabinet, as shown in Fig. 6, to hold the device in place. The armature V carries the detent b, to which it is rigidly fastened. On the face of the end to is mounted a block of insulating materials, which in turn carries the number-plate R of the drop and the pivots (t upon which the shutter a swings. On the front part of the lower face of piece 10 is mounted the block of insulating material T, in which is fitted the sleeve D ofthe jack. The face i" of the block T, Fig. 4, serves the same purpose as the bearing e in Figs. 2 and 3. The piece 20 is out awayat this point, as shown in detail at w in Fig. 7, and is adapted to form a guide for the slide E to hold the same in place. The slide E bears against the piece to at e, which is the equivalent of the bearing 6 in Fig. 3. A button of insulating material (2 is mounted in the end e of the slide E in such a manner as to insulate the slide E from the tip c of the switchboardplug when the same engages with the slide to operate the same.

At the rearward part of piece to is mounted an insulating-block u, carrying the springs ff of the jack and also the connector 61 of the sleeve D. The spring f is adapted to engage with the tip 0 of the plug 0 and to be moved by the same out of contact with spring f The winding of the coily is connected with the springsf and f and the sleeve-connector d in such a manner as to make the wellknown circuit for switchboard drops and jacks and which is illustrated diagrammatically in Fig. 10.

The night bell contacts and circuit are shown in detail in Fig. 8. In the insulatingblock S a recess is out to permit of the extension a of shuttera to pass. In the path of the extension a at a suitable point is placed a small rod a, which acts as a stop for the shutter a and also as one contact of the night-bell circuit. The shutter a serves as the other contact, and when it falls closes the circuit and causes the bell to ring in the wellknown way.

Having thus fully described my invention in full, what I desire to secure and protect by Letters Patent is 1. Inacombinedindicatorand jackfortelephone-lines, the combination of a socket, a suitable plug adapted to enter said socket, a drop-shutter in close proximity to said socket and a slide adapted to engage with the tip of said plug to be moved horizontally thereby and adapted to cooperate with the said dropshutter to restore the same; said slide being so formed that a vertical movement is im parted to the end cooperating with the dropshutter when said slide actuated by said plug rides horizontally over a suitable bearing, whereby the drop-shutter is restored to its normal position with greater certainty.

2. The combination of a drop, a device constructed and arranged to be moved bodily by and travel with a plug and means for simultaneously raising said device to close the drop.

3. The combination with a jack-socket and a drop, of a longitudinally-movable slide having a portion to be engaged by a plug, and a cam for causing the slide to rise and restore the drop when the plug is moved longitudinally in the jack-socket.

4. The combination with a drop, a jacksocket and a front piece having a slot, of a slide 4 adapted to be moved by a plug, projecting through the slot and having a cam to engage the wall of the slot and raise the slide to restore the drop.

5. The combination with a drop and jacksocket, of a slide projecting beyond the drop and adapted to receive it when it falls, an arm depending from the slide into the jack-socket and adapted to be actuated by a plug and a cam to effect the elevation of the slide to restore the drop.

6. In a combined indicator and jack device for telephone-lines, the combination with the jack havinga socket, of a suitable plug adapted to enter said socket, a drop-shutter pivoted upon the front of said device above the socket and in close proximity thereto, a longitudinally-movable slide mounted in said device above the socket and having a downwardlyturned end extending into the pat-hot the plug when the plug is inserted in the socket, the outer end of said slide being turned upwardly so as to stand in front of said dropshutter, whereby when the drop-shutter is down and the plug is inserted in the socket, its tip engages the downwardly-turned end of the slide and causes the slide to travel inwardly with the plug while the said enter upturned end of the slide engages the dropshutter and restores the same, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

HENRY M. FISK.

WVitnesses:

GEORGE A. BRIGGS, A. J. Braces. 

